How to make this colorful shiny bubble in blender2.8? (iridescence)
You could use a shader like this. I find it works best with the Blend Mode set to &quot;Alpha Hashed&quot; (highlighted). I also found equally pleasing, but different results by using different inputs for the ColorRamp Leading to the Emission. The ones I found to work best are Position, Normal, Tangent, True Normal, and Reflection (also highlighted). Make sure bloom is enabled for the full effect. Make sure to rotate around the sphere as well, as the colors change based on position.
If you're wondering, the Noise Texture I used as a displacement is just to give it a bit of a &quot;warped bubble&quot; look to make it look more natural and to show off the colors better.